The scientific discoveries and technological innovations produced by
Bell System research and engineering were critical not only to the
evolution of global telecommunications but, more widely, they had a
considerable impact on the technological base of the global economy and,
indeed, on our daily lives.

Bell Labs is the source of many significant contributions, of course, in
the area of telephony, but also in memory devices, imaging devices,
system organization, computers and software technology, as well as
acoustics, optics, switching, transmission, wireless and data
communication. New principles, new materials, new devices, and new
systems from Bell Telephone Laboratories resulted in new industries,
hundreds of new products, and thousands of new jobs. The invention of
the transistor
in 1947, and subsequent advances in related solid-state device and
circuit technology formed the basis of a multibillion dollar global
industry and ultimately enabled the digital world. Shannon's seminal
paper titled >*"A Mathematical Theory of Communication,"*
published over 60 years ago, gave birth to Information Theory and has
stood as the guiding foundation for communications scientists and
engineers in their quest for faster, more efficient, and more robust
communications systems ever since. The charge-coupled device (CCD),
a technology that transforms patterns of light into useful digital
information, is the basis for many forms of modern digital imaging. It
has launched entirely new industries and markets and is widely used in
devices as diverse as digital cameras, video cameras, and bar code
readers as well as in security monitoring, medical endoscopy, modern
astronomy and video conferencing. Optical technology and systems, from
earliest advances in lasers to low-loss fiber, opto-electronic waveguide
devices, and high capacity WDM transmission systems have enabled
worldwide connectivity to build a truly global community. Cellular telephone service,
the concept that multiple lower-power transmitters could be spread
throughout a region employing automatic call handoff and frequency reuse
changed the face of communications. Multiple input multiple output
(MIMO) smart antenna technology in concert with LTE, based on OFDM
technology, will define next generation wireless, delivering wider
coverage and higher throughput.

"Technological innovation" is more than just invention. It is a
process, often long and costly, of transforming new scientific knowledge
into feasible technology, introducing it to use, and making its
benefits available to the public. âTechnical integrationâ is intended
to emphasize the more subtle flow of an intangibleâengineering
information and understanding. Not only has Bell Labs innovated, but it
also showed the world technical integration of the innovations. The *Bell System Technical Journal* was a key enabler for this achievement.

With this posting of the *Bell System Technical Journal* from
volume 1 issue 1 in July 1922 to the final issue published in December
1983, we are pleased to be able to open the vault of this knowledge to
our global technical colleagues.

Rod Alferness

Chief Scientist, Bell Labs

RESULTS

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